CN101682740B - Content download system, content download method, content supplying apparatus, content supplying method, content receiving apparatus, content receiving method - Google Patents

Content download system, content download method, content supplying apparatus, content supplying method, content receiving apparatus, content receiving method Download PDF

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Publication number
CN101682740B
CN101682740B CN2008800180026A CN200880018002A CN101682740B CN 101682740 B CN101682740 B CN 101682740B CN 2008800180026 A CN2008800180026 A CN 2008800180026A CN 200880018002 A CN200880018002 A CN 200880018002A CN 101682740 B CN101682740 B CN 101682740B
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content
permission
play
receiving apparatus
user
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CN101682740A (en
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北里直久
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Sony Corp
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Sony Corp
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/85406—Content authoring involving a specific file format, e.g. MP4 format
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
    • H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
    • H04N21/43072—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen of multiple content streams on the same device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4627—Rights management associated to the content
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/81—Monomedia components thereof
    • H04N21/8126—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts
    • H04N21/8133—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts specifically related to the content, e.g. biography of the actors in a movie, detailed information about an article seen in a video program
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8352—Generation of protective data, e.g. certificates involving content or source identification data, e.g. Unique Material Identifier [UMID]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8355—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17318—Direct or substantially direct transmission and handling of requests

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Technology Law (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Storage Device Security (AREA)

Abstract

The present invention relates to a content download system and content download method, content supplying device and content supplying method, content receiving device, content receiving method, and program, whereby a system corresponding to various types of operating modes of content download services can be realized. Fig. 7 shows a descriptive example of a playing control meta file that is downloaded along with the content. in the playing control meta file 41 is described <content_title>, <drm_server_uri>, <license_id>, <license_type>, <license_description>, <user_confirmation>, <user_messsage>, and <price>. In the case that multiple licenses are set as to a single content, the items <license_id> through <price> are described only the amount of the number of set licenses. The present invention is applicable to a content download service.

Description

Content download system and content download method, Content supply equipment and Content supply method, content receiving apparatus and content reception method
Technical field
The present invention relates to a kind of content download system and content download method, Content supply equipment and Content supply method, content receiving apparatus and content reception method and program; And relate more particularly to help content download system and content download method, Content supply equipment and Content supply method, content receiving apparatus and content reception method and the program under the situation that realizes a kind of content download service, used, said content download service provides the permission corresponding to each of the various methods for using of download content.
Background technology
Along with the high-speed data communication networks development that with the internet is representative, there has been the content download service (for example, referring to patent documentation 1) of the various contents (like music, video, computer program etc.) that have as product.
Yet existing content download service all is the service that is used for personal computer, and reaches the degree that everyone can easily use (for example like television receiver) far away.
Especially under the situation of content download service with video (comprising corresponding audio frequency and captions) as product; Can not realize comprehensively (full-scale) service; The major part of these services is experimental products, wherein under the situation of prepayment constant expense, can watch video content according to expectation, uses the prepayment method to carry out in the optional time and downloads; And only realized basic manipulation mode, as be used for reducing after each foradownloaded video content the pattern of the surplus of prepaid amount.
Patent documentation 1: the open No.2000-113066 of japanese unexamined patent
Summary of the invention
In addition, under the situation of video content as the round Realization of the content download service of product, not only above-mentioned basic manipulation mode, and and it is also contemplated that various operator schemes.
Now, operator scheme means the combination of using period restriction, the restriction of content copy etc. like the sequential that accounts (timing), download sequential, content.
Considered that these situation make the present invention, and realized can be corresponding to the system of the various operator schemes of content download service.
Technical scheme
Content download system as first aspect of the present invention comprises: Content supply equipment is used for supplying content; And content receiving apparatus, be used for via network from said Content supply equipment received content; Said content receiving apparatus comprises input device, is used to import user's operation; Download apparatus, be used for corresponding to said user operation from said Content supply device downloads encrypted content be used to play the required Play Control data of said content; Deriving means is used for when playing said downloaded contents, comprises the existence of the permission of the key that is used to decipher said encrypted content based on said Play Control data validation, and obtains corresponding to the said permission of confirming the result; And playing device, be used to use the permission of said acquisition to play said encrypted content; And said Content supply equipment comprises the control data feeding mechanism, is used to respond from the request of said content receiving apparatus and supplies to be used to play and downloaded the required said Play Control data of content; The Content supply device is used to respond from the request of said content receiving apparatus and supplies said encrypted content; And the permission feeding mechanism, be used to respond from said content receiving apparatus based on the request of said Play Control data and supply the said permission that comprises the key that is used to decipher said encrypted content; Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
Content download method as first aspect of the present invention is a kind of content download method that is used for content download system; Said content download system comprises that configuration comes the Content supply equipment of supplying content; And configuration comes via the content receiving apparatus of network from said Content supply equipment received content; Said method comprises the following steps: to use said content receiving apparatus; Input user operation is corresponding to said user's operation, from said Content supply device request encrypted content and the required Play Control data of the said content of broadcast; And use said Content supply equipment, response is supplied said encrypted content and said Play Control data from the request of said content receiving apparatus; And use said content receiving apparatus; When playing said downloaded contents; Comprise the existence of the permission of the key that is used to decipher said encrypted content based on said Play Control data validation, and corresponding to confirming the result to the said permission of said Content supply device request; And use said Content supply device responds from of the request of said content receiving apparatus, supply the said said Content supply equipment of permitting based on said Play Control data; And use said content receiving apparatus, use the permission of said acquisition to play said encrypted content; Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
According to a first aspect of the invention, use said content receiving apparatus, operate from said Content supply device request encrypted content and the required Play Control data of the said content of broadcast corresponding to the user; Response is supplied encrypted content and Play Control data from the request of said content receiving apparatus.In addition; Use said content receiving apparatus, when playing downloaded contents, comprise the existence of the permission of the key that is used for the enabling decryption of encrypted content based on said Play Control data validation; And the result asks for permission corresponding to affirmation, and this request of response is fed to Content supply equipment with permission.In addition, use content receiving apparatus, use the permission that obtains to play encrypted content.Notice that in said Play Control data, described at least one group of License Info, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
Content supply equipment as second aspect of the present invention is configured to the Content supply equipment of supplying content to the content receiving apparatus that connects via network; Said Content supply equipment comprises: the control data feeding mechanism is used to supply broadcast by the required Play Control data of said content receiving apparatus downloaded contents; The Content supply device is used to respond from the request of said content receiving apparatus and supplies said encrypted content; And the permission feeding mechanism, be used to respond from said content receiving apparatus based on the request of said Play Control data and supply the permission that comprises the key that is used to decipher said encrypted content; Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
In said license type information, can describe following at least a: ordinary playing, its this permission of indication has the restriction of the play period that is applied to said content; Extra broadcast, its this permission of indication has the play period of prolongation after the play period corresponding to said ordinary playing has finished; Preview is play, and its this permission of indication is used to try/audition; Downloading and playing progressively, its this permission of indication makes content when downloading, to play; And derive, it indicates this permission to allow said content to export and record external equipment from said content receiving apparatus.
After said permission feeding mechanism can finish in the play period corresponding to the permission of said ordinary playing, response was supplied said extra broadcast permission from said content receiving apparatus based on the request of said Play Control data.
Said permission feeding mechanism can respond from the request of said content receiving apparatus based on said Play Control data, only supplies said preview for same content and plays permission once.
Said permission feeding mechanism can respond from the request of said content receiving apparatus based on said Play Control data, and only during content is downloaded, supplies progressively downloading and playing permission.
In said Play Control data, can describe at least one group or more License Infos, said License Info comprises the approval in-formation whether unique license identification information, license type information, indication will get the Green Light from the user of content receiving apparatus and shows and the exhibition information of permitting relevant user when obtaining permission.
Content supply method as second aspect of the present invention is a kind of Content supply method that is used for Content supply equipment; Said Content supply equipment disposition be with Content supply to the content receiving apparatus that connects via network, said Content supply method comprise the following steps: to supply play said content receiving apparatus the required Play Control data of downloaded contents to said content receiving apparatus; Response is from the request of said content receiving apparatus and supply encrypted content; And response is supplied the said permission that comprises the key that is used for the enabling decryption of encrypted content from said content receiving apparatus based on the request of said Play Control data; Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
Program according to a second aspect of the invention is that a kind of computer that makes carry out to be handled with the program of control content supply equipment supplying content to the content receiving apparatus that connects via network, said processing comprise the following steps: to supply play said content receiving apparatus the required Play Control data of downloaded contents to said content receiving apparatus; Response is from the request of said content receiving apparatus and supply encrypted content; And the said permission that comprises the key that is used to decipher said encrypted content is supplied in response based on the request of said Play Control data from said content receiving apparatus; Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
Under the situation of second aspect of the present invention; With playing by the required Play Control data supply of content receiving apparatus downloaded contents to content receiving apparatus; And in response to supplying encrypted content from the request of content receiving apparatus, and response is supplied the permission that comprises the key that is used for the enabling decryption of encrypted content from content receiving apparatus based on the request of Play Control data.Notice that in said Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
Content receiving apparatus according to a third aspect of the invention we is the content receiving apparatus that is configured to from the Content supply equipment received content that connects via network, comprising: input device is configured to import user's operation; Download apparatus is configured to corresponding to said user's operation from said Content supply device downloads encrypted content and the required Play Control data of the said content of broadcast; Deriving means is configured to when playing said downloaded contents, comprises the existence of the permission of the key that is used to decipher said encrypted content based on said Play Control data validation, and obtains corresponding to the said permission of confirming the result; And playing device; Be used to use the permission of said acquisition to play said encrypted content; Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
Content receiving apparatus according to a third aspect of the invention we also comprises output device; Be configured to after carrying out that encryption method change to be handled or at least one in the encryption handled again, the said content of wherein encrypting by said playing device deciphering is outputed to said external equipment.
At least a below in said license type information, describing: ordinary playing, it indicates this permission to have the restriction of the play period that is applied to said content; Extra broadcast, its this permission of indication has the play period of prolongation after the play period corresponding to said ordinary playing has finished; Preview is play, and its this permission of indication is used to try/audition; Downloading and playing progressively, its this permission of indication makes content when downloading, to play; And derive, it indicates this permission to allow said content to export and record external equipment from said content receiving apparatus.
After the play period corresponding to said ordinary playing permission had finished, said input device can receive the operation that the user of said extra broadcast permission is obtained in approval.
After the play period corresponding to the permission of said ordinary playing had finished, said input device can accept to instruct the user's that obtains said extra broadcast permission operation.
Response is from the request of said playing device based on said Play Control data, and said input device can only be accepted once command for same content and obtain the operation that the user of permission is play in said preview.
Response is from the request of said playing device based on said Play Control data, and said input device can only be accepted the operation that instruction obtains the user of said progressively downloading and playing permission during content is downloaded.
In said Play Control data, describe at least one group or more License Infos, whether unique identifying information, license type information, the indication that said License Info comprises permission is obtained the approval in-formation of approval and is showed and the exhibition information of permitting relevant user from the user of content receiving apparatus when obtaining permission; And said content receiving apparatus according to a third aspect of the invention we can also comprise the affirmation device, is used for according to said approval in-formation, confirms to obtain said permission by user's approval.
Under the situation of obtaining user's approval through said affirmation device, said deriving means can obtain said permission; And under the situation of not obtaining user's approval through said affirmation device, said playing device can notify user content not play.
Content reception method as the third aspect of the invention is a kind of content reception method of content receiving apparatus; Said content receiving apparatus is configured to from the Content supply equipment received content via the network connection, and said method comprises the following steps: to import user's operation; Corresponding to said user operation, from said Content supply device downloads encrypted content and be used to play the required Play Control data of said content; When playing said download content, comprise the existence of the permission of the key that is used to decipher said encrypted content based on said Play Control data validation, and obtain corresponding to the said permission of confirming the result; And use said permission of obtaining to play said encrypted content; Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
Program as the third aspect of the invention makes computer carry out processing, and said program control is configured to from the content receiving apparatus of the Content supply equipment received content that connects via network, and said processing comprises the following steps: to import user's operation; Corresponding to said user operation, from said Content supply device downloads encrypted content and be used to play the required Play Control data of said content; When playing said download content, comprise the existence of the permission of the key that is used to decipher said encrypted content based on said Play Control data validation, and obtain corresponding to the said permission of confirming the result; And use said permission of obtaining to play said encrypted content; Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
Under the situation of the third aspect of the invention; Operate corresponding to the user; From Content supply device downloads encrypted content and play the required Play Control data of said content, and, confirm whether to exist any permission of the key that is used for the enabling decryption of encrypted content when playing when downloading content; The result obtains permission corresponding to affirmation, and uses the permission that obtains to play encrypted content based on the Play Control data.Notice that in the Play Control data, described at least one group or more License Infos, said License Info comprises unique license identification information, license type information and shows and the exhibition information of permitting relevant user.
Beneficial effect
Use first aspect of the present invention, the system of various operator schemes that can the contents processing download service can be provided.
Use second aspect of the present invention, through the various operator schemes of contents processing download service, can be with Content supply to receiving equipment.
Use the third aspect of the invention,, can download and use content for the various operator schemes of content download service.
Description of drawings
Fig. 1 is a concept map of having used content download system of the present invention;
Fig. 2 shows the download sequential and the figure that plays sequential of content;
Fig. 3 is the calcspar of the structure example of content download system;
Fig. 4 has described the figure that content play is handled;
Fig. 5 has described content to derive the figure that handles;
Fig. 6 shows the figure of the description example of downloading control meta file (meta file);
Fig. 7 shows the figure of the description example of Play Control meta file;
Fig. 8 is the figure that has described the general introduction of download process;
Fig. 9 is a sequential chart of having described download process;
Figure 10 is the flow chart of having described through the download process of downloader;
Figure 11 is the figure of general introduction that has described the playback process of local content;
Figure 12 is a sequential chart of having described the playback process of local content;
Figure 13 is a flow chart of having described the playback process of local content;
Figure 14 is the figure that has described the derivation processing of local content;
Figure 15 is a sequential chart of having described the derivation processing of local content;
Figure 16 is a flow chart of having described the derivation processing of local content;
Figure 17 shows the figure corresponding to the screen switching of the operator scheme of pattern a;
Figure 18 shows the figure corresponding to the processing sequence of the operator scheme of pattern a;
Figure 19 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern a;
Figure 20 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern a;
Figure 21 shows the figure corresponding to the screen switching of the operator scheme of pattern b;
Figure 22 shows the figure corresponding to the processing sequence of the operator scheme of pattern b;
Figure 23 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern b;
Figure 24 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern b;
Figure 25 shows the figure corresponding to the screen switching of the operator scheme of pattern c;
Figure 26 shows the figure corresponding to the processing sequence of the operator scheme of pattern c;
Figure 27 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern c;
Figure 28 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern c;
Figure 29 shows the figure corresponding to the screen switching of the operator scheme of pattern d;
Figure 30 shows the figure corresponding to the processing sequence of the operator scheme of pattern d;
Figure 31 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern d;
Figure 32 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern d;
Figure 33 shows the figure corresponding to the screen switching of the operator scheme of pattern e;
Figure 34 shows the figure corresponding to the processing sequence of the operator scheme of pattern e;
Figure 35 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern e;
Figure 36 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern e;
Figure 37 shows the figure corresponding to the screen switching of the operator scheme of pattern f;
Figure 38 shows the figure corresponding to the processing sequence of the operator scheme of pattern f;
Figure 39 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern f;
Figure 40 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern f;
Figure 41 shows the figure corresponding to the screen switching of the operator scheme of pattern g;
Figure 42 shows the figure corresponding to the processing sequence of the operator scheme of pattern g;
Figure 43 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern g;
Figure 44 shows the figure corresponding to the description example of the downloading control meta file of the operator scheme of pattern g;
Figure 45 shows the calcspar of the ios dhcp sample configuration IOS DHCP of all-purpose computer.
The explanation of reference number
1 content download system
2 networks
10 receiving equipments
20 supply equipments
11 browsers
12 download
13 storages
14?ECG
15 AV players
16 drm agents
17 outside output units
21 Web servers
22 client terminal management servers
23 charge/account settlement servers
24 meta data servers
25 content servers
26 DRM servers
31 downloading control meta files
41 Play Control meta files
Embodiment
Be described in detail having used specific embodiment of the present invention below with reference to accompanying drawings.
Fig. 1 shows the basic conception as the content download system of embodiments of the invention.
Content download system 1 is made up of receiving equipment 10 and supply equipment 20, and said receiving equipment 10 is installed in the users home of using content, and 20 responses of said supply equipment are from downloading content via the request of the receiving equipment 10 of network 2 connections.
Notice that according to present embodiment, download is receiving equipment 10 received and accumulated electronic data (like the content from supply equipment 20 supplies) via network 2 processing.In addition, content comprises video and the AV data that are used to play with its corresponding audio, and the caption data corresponding with it etc., their use content key to encrypt.In order to use this content, need permission, said permission comprises the content key that is used to decipher its encryption, and has described service condition etc. in the said permission.
Network 2 is to be the data represented communication network with the internet, and can use cable or wireless network or radio network such as optical cable.
For example, suppose that receiving equipment 10 is built in the television receiver or externally is attached to television receiver.Supply equipment 20 constitutes (will describe details with reference to Fig. 3 subsequently) by a plurality of servers that on network 2, provide etc.
According to content download system 1; As shown in Figure 2; The user of receiving equipment 10 can download arbitrary content A from supply equipment 20 via network 2; And can play the content A of accumulation in receiving equipment 10 at arbitrary sequence subsequently, content A outputed to the outside of receiving equipment 10, and be recorded on the recording medium like DVD (digital versatile disc).Hereinafter, output has been downloaded content to the outside of receiving equipment 10 and record and will be called as derivation (exporting) on the recording medium.
Therefore, use (play or derive) basically under the situation of downloaded contents at content download system 1, thus between receiving equipment 10 and supply equipment 20 via the communication speed expectation of network 20 but do not require it is high speed.
Next, will the receiving equipment 10 of constitution content download system 1 and the detailed configuration example of supply equipment 20 be described with reference to 3.
Receiving equipment 10 comprises: browser 11, and it visits supply equipment 20, obtains HTML (HTML) document or BML (broadcast markup language) document or the like, and shows corresponding webpage; Downloader 12, it is the assistance application of browser 11, and transmits contents and metadata thereof with accumulation storage 13 from supply equipment 20; Storage 13, it is made up of hard disk drive etc.; ECG 14, and its user interface that is used as the user is to use downloaded contents; AV player 15 is used to play downloaded contents; DRM (digital copyright management) client 16 is used for obtaining to comprise that from supply equipment 20 deciphering is in the permission of the required content key of the content of encrypted state; And outside output unit 17, be used for the content of playing through AV player 15 is outputed to the outside of receiving equipment 10.
Browser 11 is based on display web pages such as the html document that obtains from supply equipment 20, BML documents, and the user can alternatively carry out the content choice operation thus, as buying and download the content of use contract and content download service.
Downloader 12 is by starting based on the control of the browser 11 of html document, BML document etc., and is in the content and the corresponding metadata thereof of encrypted state from supply equipment 20 transmission, and it is accumulated in the storage 13.
There is two types metadata: downloading control meta file 31 (Fig. 6) and Play Control meta file 41 (Fig. 7).Downloading control meta file 31 has the information of describing therein, to transmit contents from supply equipment 20 and to permit accordingly and Play Control meta file 41.Play Control meta file 41 has the required information of describing therein of broadcast content corresponding.
In addition, downloader 12 is based on Play Control meta file 41 generator DB (database) 13A of metadata, and it is to be used for the information of presenting to the user with at the contents list of storage 13 accumulation, and it is accumulated in the storage 13.
Content and metadata thereof that storage 13 accumulation transmit from supply equipment 20.In addition, storage is by first DB 13A of downloader 12 generations.
ECG 14 is that resident (resident) uses; And the first DB 13A based on being stored in the storage 13 provides the tabulation of downloading content to the user; And to the user local contents list is provided, it will play the interactive GUI (graphic user interface) of the content of (watching/listen to) or derivation for being used for user's selection.
AV player 15 starts through ECG 14; Read the content that will play from storing 13, and only when satisfying the indicated condition of RMPIp (playing service condition information) from drm agent 16 supplies, just the content of the content key encryption of supplying from drm agent 16 is used in deciphering; And further separate code; Play the AV data thus, on display, show corresponding video, and from loud speaker (not shown) output audio.
In addition, AV player 15 reads will be from storing the content of 13 derivation, and deciphering is used from the content of the content key encryption of drm agent 16 supplies, and the coded data with decrypted result outputs to outside output unit 17 then.
When setting up the secure communication path with the DRM server 26 of supply equipment 20, drm agent 16 obtains to comprise the permission of content key and the own permission that keeps acquisition from DRM server 26.In response to request, under the situation of the service condition of only in satisfying permission, describing content key is fed to AV player 15 from AV player 15.
Only satisfying by the time from the expressed condition of the RMPI (deriving service condition information) of drm agent 16 supplies; Outside output unit 17 is suitably changed corresponding to from the output destination of the coded data of AV player 15 (like the recording medium of DVD, playback equipment, recording equipment or the like) coding method, and output destination, downstream is encrypted and outputed to coded data once more.
Supply equipment 20 comprises: Web server 21, its supply are used on receiving equipment 10 showing the html document, BML document of interaction network page etc.; Client terminal management server 22 is used to manage the information of the client that relates to the content download service; Charge/account settlement server 23 is used for carrying out clearing in the use of content download service; Meta data server 24 is used for the metadata corresponding to content is sent to receiving equipment 10; Content server 25 is used for content is sent to receiving equipment 10; And DRM server 26, be used for permission is fed to receiving equipment 10.
Web server 21 is in response to the request from the browser 11 of receiving equipment 10, and html document, BML document that will be used to show all kinds webpage etc. is fed to browser 11.The grouping (product unit) that client terminal management server 22 will be bought by different clients and downloaded relevance and managed client (user's of receiving equipment 10) client-side information (for example, ID (DRM ID) of the machine ID of client id, password, settlement information (credit number etc.), receiving equipment 10, drm agent 16 etc.).
Charge/account settlement server 23 is in response to the request from client terminal management server 22, to client executing charge/settlement process.
Meta data server 24 management relate to the information of grouping (product unit of content) and content; And in response to request from the downloader 12 of receiving equipment 10; Transmit metadata (as downloading control meta file 31 and Play Control meta file 41) time the downloader 12, provide information needed to arrive other server.Content server 25 is in response to transmitting content to downloader 12 from the request of the downloader 12 of receiving equipment 10.
When setting up the secure communication path with the drm agent 16 of receiving equipment 10, the permission that 26 supplies of DRM server comprise the content key that is used for the enabling decryption of encrypted content is to drm agent 16.
Permission can comprise following type.That is to say; Existence is such as (for example playing permission; The content play period is 8 days 7 nights etc.), extra broadcast (for example permits; One evening of elongated segment during broadcast), preview (test is watched/listened to) permission (for example, content play is time qualified is 10 minutes), progressively download permission and (play simultaneously downloading content; Unavailable after download accomplishing), derive permission (for example, content only can copy DVD to once) or the like so true permission, and pseudo-permission (for example, effectual time be made as the period and the content of extremely lacking in fact can not use).Supply and the permission that is stored in the drm agent 16 are deleted when the term of validity is expired automatically.
Note, can arrange that Web server 21 to the DRM servers 26 of forming supply equipment 20 so that concentrate on the network 2, maybe can be dispersed placement.In addition, several can the combination in Web server 21 to the DRM servers 26, or the function of Web server 21 to DRM server 26 can be provided on a server.
Next, will the content that be sent to receiving equipment 10 and play from supply equipment 20 be described with reference to Fig. 4.
Content server 25 experience at supply equipment 20 (are for example used the predictive encoding method; Use MPEG 2) compressed encoding the time; The AV data of component content are converted into MPTS (TS) with captions etc.; And under the state of encrypting with the form of TS grouping increment, be sent to receiving equipment 10 through content key Kc, and be accumulated in the storage 13 in generation on the DRM server 26.
On the other hand; To be included in the state in the permission with RMPIp (playing service condition information), content key Kc that will when deciphering is in the content of encrypted state, use and content are fed to the drm agent 16 of receiving equipment 10 dividually from the DRM server 26 of supply equipment 20.
Its encryption of content experience that the form with TS grouping increment of accumulation is encrypted in storage 13 is used from the content key Kc deciphering of drm agent 16 supplies by AV player 15, and deciphering is as MPEG 2 MPTSs of this result's acquisition.Yet the content key that is supplied with from drm agent 16 is confined to satisfy under the situation of the service condition of in RMPIp, describing (using period, access times etc.).
Next, will describe the content that is sent to receiving equipment 10 from supply equipment 20 and derive with reference to Fig. 5.
As stated, content is encrypted and download to receiving equipment 10.On the other hand; To be included in the state in the permission with RMPIe (deriving service condition information), content key Kc that will when deciphering is in the content of this encrypted state, use and content are fed to the drm agent 16 of receiving equipment 10 dividually from the DRM server 26 of supply equipment 20.
Its encryption of content experience that the form with TS grouping increment of accumulation is encrypted in storage 13 is used from the content key Kc deciphering of drm agent 16 supplies by AV player 15, and will be fed to outside output unit 17 as MPEG 2 MPTSs that its result obtains.Externally output unit 17; Have only under the situation that satisfies the service condition of in RMPIe, describing (number of times that is used to copy, output destination etc.); Convert MPEG 2 MPTSs into coding method, and then encrypt and output to downstream corresponding to the output destination.
Next, will the metadata that receiving equipment 10 obtains from supply equipment 20 be described with reference to Fig. 6 and 7.
Fig. 6 shows the description example of downloading control meta file 31, the information of wherein having described content and having permitted accordingly and be used for downloading and playing control meta file 41.Notice that downloading control meta file 31 needn't be corresponding to a content, and corresponding to the download unit of forming by one or more content.
In downloading control meta file 31, the title of content download unit is described in < dl_unit_name >.The download sequential (target date/time, set time immediately) that is included in the content in the download unit is described in < dl_timing >.
Note, be included under the situation in the download unit many contents, below each item from < criid>to < av_media>amount corresponding to many contents has only been described.
The ID that is included in the content in the download unit describes in < criid >.The content-data size is described in < size >.URI (same resource identifier) as the meta data server 24 of the transfer source of Play Control meta file 41 describes in < cpc_meta >, and wherein Play Control meta file 41 is to have described the required information of play content.URI as the content server 25 of content transfer source is described in < av_media >.
URI as corresponding to the DRM server 26 that obtains the destination of the permission of download unit describes in < drm_server_uri >.License ID corresponding to download unit is described in < license_id >.Note; Possibly there is such situation; License ID wherein described herein and be not the ID of true permission (can use the permission of content), but the ID (details is described subsequently) of pseudo-permission (for example, having the term of validity that is made as utmost point short time interval and the permission that in fact can not use content).
Note; Can carry out such layout; Wherein in downloading control meta file 31, describe extraly and indicate whether to obtain information corresponding to downloading the permission of accomplishing; Make only to show under the situation of the permission that acquisition is accomplished corresponding to the content download, just obtain to download the permission of completion corresponding to content in information.
Fig. 7 shows the description example of Play Control meta file 41, has wherein described the required information of play content.Play Control meta file 41 exists corresponding to each content.
In Play Control meta file 41, content name is described in < content_title >.URI as corresponding to the DRM server 26 that obtains the destination of the permission of content describes in < drm_server_uri >.
Notice that under for the various permissions of the single content setting situation of (as playing permission, extra broadcast permission, deriving permission etc.), the following project of from < license_id>to < price>only is used to describe the quantity that sets permission.
License ID corresponding to content is described in < license_id >.Notice that license ID described herein is true license ID (details is described subsequently).The type (being also referred to as license type) of permission is described in < license_type >.Notify the information of user's the service condition that relates to permission in < license_description >, to describe.
When securing permission, whether confirm not describe through " on " (affirmation) in <user_confirmation>and " off " (not confirming) with the user.Securing permission is to be used for being described at <user_message>by the message that the user confirms.The charge amount that when securing permission (promptly using content), is generated is described in < price >.Noting, is under the situation of " on " (being confirmed by the user when promptly securing permission) at <user_confirmation >, description project <user_message>and < price >.
Note; The project of in the demonstration example in Fig. 7, describing, content chapters and sections information, the index information (being used for the size of each GOP and the map information of time) that is used for special play-back (trick play) control, coding method information, audio frequency/captions handover information or the like can join Play Control meta file 41.
Next, will receiving equipment 10 is downloaded a series of processing of contents etc. from supply equipment 20 general introduction be described with reference to Fig. 8.
Note; Prerequisite as a series of processing; We suppose that the user of receiving equipment 10 holds the registration of having accomplished for the service use the operator of content download service; Therefore about the user client information registering of receiving equipment 10 client terminal management server 22 to supply equipment 20, and related other information of buying bag with management and downloading content.
Corresponding to scheduled operation from the user, the Web server 21 of the browser of receiving equipment 10 11 visit supply equipments 20, and appear by the download navigation page or leaf of can the downloaded contents tabulation etc. forming to the client.Start downloaders 12 through browser 11 in user's executable operations on the download navigation page or leaf when selecting the content in the download unit.
The downloading control meta file 31 that the downloader 12 that starts obtains corresponding to selected content download unit from meta data server 24.Note, as the URI of the meta data server 24 in the source that obtains of the downloading control meta file 31 that obtains here description in the html document of download navigation page or leaf etc.
According to the description content of downloading control meta file 31, the downloader 12 that has obtained downloading control meta file 31 transmits content from content server 25, and will be accumulated in from the Play Control meta file 41 of meta data server 24 in the storage 13.In addition, downloader 12 generates the first DB 13A that is used to generate local contents list based on the Play Control meta file that transmits 41, and it is accumulated in the storage 13.
In addition, downloader 12 request drm agents 16 are to obtain permission.Permission is asked and obtained to drm agent 16 according to the description content of the downloading control meta file 31 that is obtained by downloader 12 from DRM server 26.
The summary description of a series of processing of being used to download content etc. has left it at that.
Next, will download the detail operations of a series of processing of content etc. with reference to the sequential chart among Fig. 9 and the flow chart description among Figure 10.Notice that meta data server 24 is integrated with content server 25 so that illustrate in the drawings in Fig. 9, and similarly situation possibly occur in other figure.In a series of processing of downloading content etc., Figure 10 is focussed in particular on the processing of the downloader 12 of receiver 10.
The prerequisite of handling is similar to above-mentioned summary description.At first; In step S11, the Web server 21 of the browser 11 visit supply equipments 20 of receiving equipment 10, and in case carried out authentification of user; Obtain the html document that is used to show the download navigation page or leaf etc., and show the download navigation page or leaf to the user based on the html document that obtains etc.In case but carrying out for the download navigation page or leaf of interactive operation, the user is used for operation, the downloader 12 that browser 11 starts as assistance application in step S12 at the download unit chosen content.
In step S13; The downloader 12 that starts is based on the URI accesses meta-data server 24 of the meta data server of notifying from browser 11 24; Obtain downloading control meta file 31, and it is accumulated in the storage 13 (the step S31 among Figure 10) corresponding to the download unit of the content of selecting.
In step S14; Downloader 12 is carried out initialization process; To comprise following processing: analyze the downloading control meta file 31 that obtains; Confirm to download sequential, after understanding the size of wanting downloaded contents, confirm the free space of storage 13, and in storage 13, generate catalogue (the step S32 among Figure 10 is to S35).
In step S15; Downloader 12 is based on the URI accesses meta-data server 24 of the meta data server of describing in the downloading control meta file 31 24; Obtain Play Control meta file 41 corresponding to each bar of all the elements in the download unit that is included in selection; And based on the Play Control meta file 41 that obtains, generator DB 13A and it is accumulated in the storage 13 (the step S36 among Figure 10) with Play Control meta file 41 in step S16.
In step S17, downloader 12 is based in the downloading control meta file 31 URI and the content ID accessed content server 25 of the content server of describing 25, and asks to be included in the transmission of the content in the download package increment of selection.Response should be asked, and in step S18, content server 25 starts the transmission of institute's request contents, and downloader 12 is accumulated in the content of transmitting in the storage 13 (the step S37 among Figure 10).
Between this transmission period, even transmission is owing to communication disruption stops, in step S19, after communication disruption was recovered, the state that downloader 12 execution stop from transmission was to the processing of restarting content delivery.
Download and accomplish in case be included in all the elements in the download unit of selection, in step S20, downloader 12 request drm agents 16 obtain permission (step S38 among Figure 10 and S39).Drm agent 16 is based on the URI and the license ID visit DRM server 26 of the DRM server of describing in the downloading control meta file 31 26; After completion comprises the authentication processing of notice etc. of DRM ID, obtain permission, and the permission that obtained of notice downloader 12 will be held drm agent 16 neutralizations and secure permission.Notice that the permission that obtains is corresponding to the license ID of in downloading control meta file 31, describing here, possibly have it is the situation of true permission, and possibly to have it be the situation of pseudo-permission.
On the other hand, DRM server 26 notifies client terminal management server 22DRM client 16 to ask for permission in step S21.Client terminal management server 22 download in content on the basis accomplished through 23 pairs of client executing charge/clearing of charge/account settlement server (yet; For example under the situation of the operator scheme of prepaying fixed amount; Charge/clearing are accomplished, and will not carry out charge/clearing now thus).
In addition, client terminal management server 22 increases show that the information of having downloaded content is to client-side information.The information that here increases reflects in for the download navigation page or leaf of each client terminal to customize.Therefore, after this client can be confirmed it self downloaded contents in the download navigation page or leaf.Note, can carry out such layout, wherein will be about accomplishing result that content downloads and the message transmission of having discerned this result at supply equipment 20 ends to downloader 12, and the user of notice receiving equipment 10.
The detailed description of operation of a series of processing of being used to download content etc. has left it at that.
As stated; Through this processing; Content and be accumulated in the storage 13 of receiving equipment 10 corresponding to the Play Control meta file 41 of each content, and the permission (yet possibly exist is the situation of pseudo-permission) of correspondence content of accumulation in storage 13 is remained in the drm agent 16.
Next, will describe with reference to Figure 11 downloads to the content of receiving equipment 10 to broadcast processing summary.
Corresponding to the scheduled operation through the user, ECG 14 generates local contents list based on the first DB 13A that remains in the storage 13, and it is presented to the user.When the user plays for the local contents list chosen content that appears and indication, start AV players 15, and the information that will show the chosen content that will play is notified the AV player 15 of startup from ECG 14 through ECG 14.
Corresponding to this notice; AV player 15 reads and analyzes corresponding to the Play Control metadata 41 from storage 13 content; Extraction is corresponding to the license ID of the broadcast permission of content, and affirmation permits whether remained in the drm agent 16 corresponding to the broadcast of license ID.
Now; Broadcast permission corresponding to license ID is not maintained under the situation in the drm agent 16; I.e. permission in remaining on drm agent 16 be pseudo-permission or the permission that is used for other purposes (for example; Preview is play permission, is derived permission) situation under, in case from the user obtain for as the approval of charge, drm agent 16 is based on the URI visit DRM server 26 of the DRM server of describing in the Play Control meta file 41 26; The broadcast of the license ID that acquisition is described in Play Control meta file 41 permission, and will comprising content key Kc be fed to AV player 15.
Subsequently; AV player 15 is from storing 13 reading of content; Use supply the encryption of content to be deciphered, will decode with acquisition AV data as the coded data that its result obtains, and in output audio, show corresponding video from the content key Kc of drm agent 16.
Note, even true permission also can apply restriction for effectual time and broadcasting time.In this case, the user is notified to reduce when playing each time and is play residue degree.In addition, when permission becomes when invalid,, can carry out charge once more and can obtain new permission in case obtain user's approval.
The summary description of playing has left it at that.
Next, will be with reference to the more detail operations of the flow chart description playback process of the sequential chart of Figure 12 and Figure 13.Notice that Figure 13 especially pays close attention to the processing of AV player 15 in the playback process.
Corresponding to the scheduled operation through the user, in step 81, ECG 14 reads first DB 13A from storing 13, and in step S82, generates the local contents list as GUI based on the first DB 13A that reads, and it is presented to the user.
In case the user carries out from local contents list and selects and operation that instruction is play, in step S83, ECG 14 starts AV players 15, and the information that will show the content of having indicated broadcast is notified the AV player 15 of startup from ECG 14.
In step S84, AV player 15 is from storing the 13 Play Control meta files 41 that read corresponding to this content, and in step S85, analyzes Play Control meta file 41, and extracts the license ID (the step S91 among Figure 13) corresponding to the broadcast permission of content.
In addition, in step S86, AV player 15 confirms whether remained on (the step S92 among Figure 13) in the drm agent 16 corresponding to the broadcast permission of license ID.Broadcast permission corresponding to license ID does not remain under the situation of drm agent 16; I.e. permission in remaining on drm agent 16 is (being among the step S93 of Figure 13) under the situation of pseudo-permission etc.; AV player 15 notifies the user in order to obtain the required permission of play content; Generate charge, and presented to the affirmation information (the step S94 among Figure 13) that the user confirms whether to ratify the charge that generated.
Now; Under the situation that has obtained the approval (being Figure 13 among the step S95) through obtaining the charge that permission generates from the user; Drm agent 16 is based on the URI visit DRM server 26 of the DRM server of describing in the Play Control meta file 41 26; Acquisition is corresponding to the broadcast permission of the license ID described in Play Control meta file 41; And after determining whether to satisfy the service condition that is included in the broadcast permission, content key Kc is fed to AV player 15 (the step S96 among Figure 13).
The AV player 15 that has obtained content key Kc is read to storage 13 instruction contents in step S87; And in step S88, play the content (encryption of decryption content from holder 13 according to its instruction; The coded data that decoding obtains as its result; And obtain the AV data, show corresponding video and output audio simultaneously) (the step S97 among Figure 13).Note; Give user's result as presenting confirmation; Under not obtaining (the step S95 at Figure 13 not) to situation by the approval of obtaining the charge that permission generates from the user; AV player 15 presents this content to the user can not play (the step S98 among Figure 13), and finishes and should this locality content play handle.
Notice that AV player 15 is under user's the control when content play, and can carry out various types of operations (trick play operation, as search-start broadcast, fast-forward play, fast reverse play or the like).
In case end of text is play, in step S89, AV player 15 is from himself deletion content key Kc, and the executive termination processing, and this termination comprises the processing of controlling ECG 14 controls of returning from the user.
Leave it at that to the description of the playback process of downloading content.According to above-mentioned playback process, when play content, confirm whether obtain to play permission, and under situation about not securing permission, obtain to play permission from DRM server 26 again through drm agent 16.That is to say that from the content download phase, permission obtains twice altogether.
Next, will the summary that downloaded contents is exported to the processing of receiving equipment 10 be described with reference to Figure 14.
Corresponding to the scheduled operation through the user, ECG 14 is based on the first DB 13A that keeps in the storage 13 and generates local contents list, and it is presented to the user.The user from its derivation, starts AV players 15 through ECG 14 from the local contents list chosen content that appears and instruction thus, and the information that the content that will derive selection will be shown is notified the AV player 15 that starts from ECG 14.
Corresponding to this notice, AV player 15 reads and analyzes corresponding to the Play Control meta file 41 from storage 13 content, and confirms whether remained in the drm agent 16 corresponding to the derivation permission of content.
Now; Do not remain under the situation in the drm agent 16 in the derivation permission; After obtaining the approval like charge from the user, drm agent 26 is based on the license ID of the derivation permission of describing in the Play Control meta file 41 and permission is derived in the URI visit DRM server 26 and the acquisition of DRM server 26.Be supplied to AV player 15 so be included in the content key Kc that derives in the permission.
Subsequently, AV player 15 uses supply from the content key Kc of drm agent 16 encryption of content to be deciphered from storing 13 reading of content, and the coded data that as a result of obtains is fed to outside output unit 17.Outside output unit 17 suitably change supply coded data coding method etc. and, and it is encrypted and outputs to downstream once more export the destination.Leaving it at that derives the summary description of handling.
Next, will derive the more detail operations of handling with reference to the sequential chart of Figure 15 and the flow chart description of Figure 16.Notice that the processing of especially paying close attention to AV player 15 and outside output unit 17 is handled in the derivation among Figure 16.
Corresponding to the scheduled operation through the user, in step S111, ECG 14 reads first DB 13A from storing 13, and in step S112, generates the local contents list as GUI based on the first DB 13A that reads, and it is presented to the user.
In case the user carries out the operation that chosen content and instruction are derived for local contents list, ECG 14 starts AV players 15 in step S113, and notice illustrates information that content instruction is derived to the AV player 15 that starts.
In step S114; AV player 15 reads corresponding to the Play Control meta file 41 from storage 13 content, and in step S115, analyzes Play Control meta file 41 and extract the license ID (the step S131 among Figure 16) corresponding to the derivation permission of content.
In addition, in step S116, AV player 15 confirms whether remained on (the step S132 among Figure 16) in the drm agent 16 corresponding to the derivation permission of license ID.Derivation permission corresponding to license ID does not remain under the situation of drm agent 16; After having obtained (step S133 and 134 among Figure 16) to the approval of obtaining the charge that permission produces; Drm agent 16 is based on the URI and the license ID that derives permission of DRM server 26; Whether visit DRM server 26 and obtain to derive permission, and confirm to wrap and satisfy the service condition of drawing together in deriving permission, supplying content key K c is to AV player 15 (the step S135 among Figure 16) subsequently.
AV player 15 instruction storage 13 in step S117 that has obtained content key Kc is read content; And this instruction of response is deciphered from the encryption of the content of holder 13 supply in step S118, and supply is arrived outside output unit 17 as the coded data that its result obtains.In step S119, outside output unit 17 is suitably changed the coding method of the coded data of supplying etc., and it is encrypted and output to output destination (the step S136 among Figure 16), downstream once more.
Then, in case end of text is derived, 15 executive terminations of AV player are handled in step S120, and this termination comprises from AV player 15 self deletes the processing of content key Kc.
So far finish description to the derivation processing of downloading content.Handle according to above-mentioned derivation, confirm when export content whether drm agent 16 has obtained to derive permission, and under the situation that does not have acquisition, after the user gets the Green Light, securing permission from DRM server 26.
Next, can use the operator scheme of using the download service that content download system 1 of the present invention carries out with describing.The combination of the multiple use of the charge sequential that the operator scheme indication is used for content, use pattern, content.
The charge sequential can be made as and download consumption charge, download the back charge and three types sequential of expense is checked and accepted in service, but for downloading consumption charge and downloading the back charge, can on the screen that is shown by browser 11, notify the user will produce charge.For service point charge, can on screen, be shown as user notification and the affirmation about whether producing charge and quantity etc. is provided through ECG 14.
The use pattern can mainly be divided into broadcast (watching/listening to content) and derive (outputing to external equipment) two types.Note; (for example can adopt ordinary playing for playing; The broadcast period is set at 8 days 7 nights; But also being described as lease watches/listens to), the extra broadcast used of preview (test is watched/listened to) and be used for ordinary playing (lease is watched/listened to) is expired after (for example, extra an evening) and downloading the progressively downloading and playing that content starts broadcast before accomplishing.In addition, can also adopt and derive permission, thereby can arrive the copy of DVD etc.For these use patterns each, the service condition of permission is different, and their difference is described as the license type in the project < license_type>of Play Control meta file 41.
The multiple use of a content is once not only adopted single use pattern for downloading content, but adopts multiple use pattern.Especially, can be to downloading the multiple different use pattern and the charge sequential that be used for each use pattern of content setting by the multiple permission of above-mentioned license type identification.For example, download the content that the back charge obtains the ordinary playing permission at 8 days 7 nights in advance for using, suppose can be after downloading extra purchase can proceed to the derivation permission etc. of the copy of DVD etc.
Aforesaid operations pattern as the combination of charge sequential, use pattern and the multiple use of content can suppose to have a lot of types; But consideration practical operation; For each of the pattern a shown in following, user's screen transformation, operating sequence and corresponding downloading control meta file 31 and Play Control meta file 41 are presented in description to seven kinds of operator schemes of g.
Pattern a: download back charge/ordinary playing
Pattern b: download back charge/derivation
Pattern c: use some charge/broadcast
Pattern d: use some charge/derivation
Pattern e: download back charge/broadcast+use point charge/charged extra
Pattern f: preview+use point charge/derivation
Pattern g: download the downloading and playing+ordinary playing of consumption charge/progressively
The operator scheme of pattern a is such service, and it provides the play period (like 8 days 7 nights) of content and allows lease to watch/listen to, and wherein carries out charge in the stage that content has been downloaded.
Figure 17 shows and presents to user's screen corresponding to pattern a operator scheme and change.At first; Show the download navigation screen through browser 11, the user selects to want downloaded contents A on the download navigation screen then, thus; Shown in the A among the figure; Shown by corresponding to the summary of the image of the minification of content, content and as the information of " lease is watched/listened to ", " 8 days 7 nights ", " 300 yen of prices " etc. and the affirmation screen that " buy and download " button is formed, and in case confirming that on-screen options does " buy and download " button, download startup.Screen display changes the screen display that shows ongoing download shown in the B among the figure into.
After the download of accomplishing content A, in case the user carries out scheduled operation, the local contents list that ECG 14 shows shown in the C among the figure.In case chosen content A from local contents list; Summary description by content A, the image of minification and the content details screen that " watch/listen to " button form of demonstration shown in the D among the figure; And in case operation " watching/listen to " button, AV player 15 starts the broadcast of content A shown in the E among the figure.Notice that the A of figure is based on to the various types of information among the D of figure that the description content of Play Control meta file 41 shows.
Figure 18 shows the processing sequence corresponding to pattern a operator scheme.In pattern a; In case the content choice of user in the download navigation page or leaf that is shown by browser 11 operated (particularly with buying; Operation for " buy and the download " button among the A of Figure 17) carries out; Purchaser record is informed to client terminal management server 22, obtains downloading control meta file 31 through downloader 12, downloads content according to downloading control meta file 31 then.Accomplish in response to the content download, ask for permission to DRM server 26 from drm agent 16 then, and the broadcast permission is fed to drm agent 16 from DRM server 26.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded content, carries out through charge/account settlement server 23 in this stage thus and charges.In addition, subsequently, the information of downloading is accomplished in reflection in the download navigation page or leaf.
Subsequently; In case carry out play operation (particularly to downloading content; Operation for " watching/listen to " button among the D among Figure 17), starts AV player 15, and confirm whether to exist any broadcast permission to drm agent 16 from AV player 15 through ECG 14.In this case, keep playing permission, be fed to AV player 15 then from playing permission extraction content key Kc thus, and through AV player 15 play content (deciphering of encryption and the deciphering of coding).
Notice that playing under the situation that permission is not maintained at drm agent 16 for some reason (for example, playing the obtaining under the situation of having failed owing to reason such as communication disruption of permission), drm agent 16 asks for permission to DRM server 26.In the case, close the use point of Play Control meta file 41 and confirm mark (describing with reference to Figure 20 subsequently), do not carry out the processing that obtains user's approval, and obtain permission.
Figure 19 shows the description example corresponding to the downloading control meta file 31 of pattern a operator scheme.Downloading control meta file 31 corresponding to pattern a operator scheme is characterised in that the ID that in the license ID project, has described as the broadcast permission of true permission.
Figure 20 shows the description example corresponding to the Play Control meta file 41 of pattern a play mode.Should be characterised in that in the license type project corresponding to the Play Control meta file 41 of pattern a operator scheme and describe ordinary playing; And the ID of this broadcast permission has been described in the license ID project; Wherein this broadcast permission is true permission, and identical with the license ID of in the license ID project of downloading control meta file 31, describing.In addition, a bit be to use an affirmation mark to be closed in addition.
Pattern b operator scheme is to copy content to DVD service once, and carries out charge in the stage that content has been downloaded.
Figure 21 shows and presents to user's screen corresponding to pattern b operator scheme and change.At first; Show the download navigation screen through browser 11, the user selects to want downloaded contents A on the download navigation screen then, thus; Shown in the A among the figure; Shown by corresponding to the summary of the image of the minification of content A, content and as the information of " DVD copy ", " 1000 yen of prices " etc. and the affirmation screen that " buy and download " button is formed, and in case confirming that on-screen options does " buying and download " button, download startup.Screen display changes the screen display that shows ongoing download shown in the B among the figure into.
After the download of accomplishing content A, in case the user carries out scheduled operation, the local contents list that ECG 14 shows shown in the C among Figure 21.In case chosen content A from local contents list; Summary description by content A, the image of minification and the content details screen that " copy " button form of demonstration shown in the D among the figure; And in case operation " copy " button passes through the derivation that AV player 15 starts content A shown in the E among the figure.Notice that the A among the figure is based on to the various types of information among the D that the description content of Play Control meta file 41 shows.
Figure 22 shows the processing sequence corresponding to pattern b operator scheme.In pattern a; In case the content choice of user in the download navigation page or leaf that is shown by browser 11 operated (particularly with buying; Operation for " buy and the download " button among the A of Figure 21) carries out; Purchaser record is informed to client terminal management server 22, obtains downloading control meta file 31 through downloader 12, downloads content according to downloading control meta file 31 then.Accomplish in response to the content download, ask for permission to DRM server 26 from drm agent 16 then, derive permission then and be fed to drm agent 16 from DRM server 26.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded content, carries out through charge/account settlement server 23 in this stage thus and charges.In addition, subsequently, the information of downloading is accomplished in reflection in the download navigation page or leaf.
Subsequently,, start AV player 15, and confirm whether to exist any derivation permission to drm agent 16 from AV player 15 through ECG 14 in case carry out to downloading the derivation operation (particularly) of content to the operation of " copy " button among the D of Figure 21.In this case; Kept deriving permission; From derive permission, extract content key Kc through drm agent 16 thus and be fed to AV player 15 then, and the encryption of content deciphered by AV player 15, will be fed to outside output unit 17 as the coded data that its result obtains; Suitably change coding method and encryption again, output to output destination (DVD register etc.) then.
Notice that deriving under the situation that permission is not maintained at drm agent 16 for some reason (for example, playing the obtaining under the situation of having failed owing to reason such as communication disruption of permission), drm agent 16 should permission to 26 requests of DRM server.In the case, close the use point of Play Control meta file 41 and confirm mark (describing with reference to Figure 24 subsequently), do not carry out the processing that obtains user's approval, and obtain permission.
Figure 23 shows the description example corresponding to the downloading control meta file 31 of pattern b operator scheme.Downloading control meta file 31 corresponding to pattern b operator scheme is characterised in that the ID that in the license ID project, has described as the broadcast permission of true permission.
Figure 24 shows the description example corresponding to the Play Control meta file 41 of pattern b play mode.Should be characterised in that corresponding to the Play Control meta file 41 of pattern b operator scheme and in the license type project, describe the DVD derivation; And the ID of this derivation permission has been described in the license ID project; Wherein this derivation permission is true permission, and identical with the license ID of in the license ID project of downloading control meta file 31, describing.In addition, a bit be to use an affirmation mark to be closed in addition.
Pattern c operator scheme is such service, and it provides like the lease of the content of the play period at 8 day 7 night and watches/listen to, and is wherein playing the stage execution charge of downloading.
Figure 25 shows and presents to user's screen corresponding to pattern c operator scheme and change.At first; Show the download navigation screen through browser 11, the user selects to want downloaded contents A on the download navigation screen then, thus; Shown in the A among the figure; Shown by corresponding to the summary of the image of the minification of content, content and as the information of " downloads " and the affirmation screen that " downloads " button is formed, and in case confirming on-screen options work " download " button, download startup.Screen display changes the screen display that shows ongoing download shown in the B among the figure into.
After the download of accomplishing content A, in case the user carries out scheduled operation, the local contents list that ECG 14 shows shown in the C among the figure.In case chosen content A from local contents list; Demonstration shown in the D among the figure by description (" watching/listening to of binding hours " about the permission of content A; " 8 days 7 nights " and " price: 300 yen "), the summary description of content A, the image of minification and the content details screen that " watching/listen to " button is formed; And in case operation " watching/listen to " button; Screen changes the affirmation screen that shown in the E among the figure, is used to obtain from user's charge approval into; And only under " affirmation " button situation on the operation acknowledgement screen, just can obtain the broadcast permission of the true permission of conduct in this stage, the broadcast of AV player 15 startup content A shown in the F among the figure then.When for the second time or thereafter in the play content of the watching of the content A/listening period time limit (being 8 days 7 nights in this case) in, so the E among the figure is jumped in the screen transformation after the D in the drawings, content A is play immediately and need not to obtain user's approval.Notice that the description content that the various types of information among the A among the figure, D and the E are based on Play Control meta file 41 shows.
Figure 26 shows the processing sequence corresponding to pattern c operator scheme.In pattern c; In case carried out content choice and the down operation of user in the download navigation page or leaf that shows by browser 11 (particularly; Be operation) to " download " button among the A of Figure 25; Notify client terminal management server 22 with service recorder, obtain downloading control meta file 31, download content according to downloading control meta file 31 then through downloader 12.Response contents is downloaded and is accomplished, and asks for permission to DRM server 26 from drm agent 16 then, and pseudo-then permission is fed to drm agent 16 from DRM server 26.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded content.After this, the information of downloading is accomplished in reflection in the download navigation page or leaf.
Subsequently; In case carry out (particularly to the play operation of downloading content; Operation to " watching/listen to " button among the D of Figure 25), starts AV player 15, and confirm whether there is any broadcast permission to drm agent 16 from AV player 15 through ECG 14.In this case, only kept pseudo-permission and maintenance broadcast permission, thereby drm agent 16 is permitted from the broadcast that 26 requests of DRM server have the license ID of describing the Play Control meta file 41.Yet, because confirming mark, the use point of Play Control meta file 41 is opened (describing with reference to Figure 28 subsequently), must before this request, obtain producing the approval of charge thus from the user.In case obtain this approval from the user, 16 of drm agents are play permission from 26 requests of DRM server.
Corresponding to this request, in case confirm the client-side information of client terminal management server 22,26 supplies of DRM server are play and are permitted drm agent 16.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded and will use content, and charge/account settlement server 23 is carried out charge thus.
Under the situation of receiving equipment 10, from play permission, extract content key Kc through drm agent 16 and be fed to AV player 15 then, then through AV player 15 play content (deciphering of encryption and the deciphering of coding).
Figure 27 shows the description example corresponding to the downloading control meta file 31 of the operator scheme of pattern c.Should be characterised in that the ID that in the license ID project, has described pseudo-permission corresponding to the downloading control meta file 31 of pattern c operator scheme.
Figure 28 shows the description example corresponding to the Play Control meta file 41 of pattern c play mode.Should be characterised in that in the license type project corresponding to the Play Control meta file 41 of pattern c operator scheme and describe ordinary playing; And in the license ID project, described the ID as the broadcast permission of true permission, they are different with the license ID of in the license ID project of downloading control meta file 31, describing (license ID of pseudo-permission).In addition, a bit be to use an affirmation mark to be opened in addition.
The operator scheme of pattern d is to copy content to DVD only once service, and carries out charge in the stage that content is copied.
Figure 29 shows and presents to user's screen corresponding to pattern d operator scheme and change.At first; Show the download navigation screen through browser 11, the user selects to want downloaded contents A on the download navigation screen then, thus; Shown in the A among the figure; Shown by corresponding to the summary of the image of the minification of content A, content A and as the information of " downloads " and the affirmation screen that " downloads " button is formed, and in case operate " download " button quilt, the download startup.Screen display changes the screen display that shows ongoing download shown in the B among the figure into.
After the download of accomplishing content A, in case the user carries out scheduled operation, the local contents list that ECG 14 shows shown in the C among the figure.In case chosen content A from local contents list; Demonstration shown in the D among the figure by description (" copying DVD to once " and " price: 300 yen "), the summary description of content A, the image of minification and the content details screen that " copy " button is formed about the permission of content A; And in case operation " copy " button; Screen changes being used to shown in the E among the figure into and obtains the affirmation screen from user's charge approval; And " confirming " button quilt on the operation acknowledgement screen only; Just can obtain derivation permission, the derivation of AV player 15 and outside lead-out unit 17 startup content A shown in the F among the figure then in this stage as truly permission.Notice that the description content that the various types of information among the A among the figure, D and the E are based on Play Control meta file 41 shows.
Figure 30 shows the processing sequence corresponding to pattern d operator scheme.In pattern d; In case carried out content choice and the down operation of user in the download navigation page or leaf that shows by browser 11 (particularly; Operation to " download " button among the A of Figure 29); Notify client terminal management server 22 with service recorder, obtain downloading control meta file 31, download content according to downloading control meta file 31 then through downloader 12.Accomplish in response to the content download, ask for permission to DRM server 26 from drm agent 16 then, and the puppet permission is fed to drm agent 16 from DRM server 26.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded content.After this, the information of downloading is accomplished in reflection in the download navigation page or leaf.
Subsequently, in case carry out derivation operation (particularly), confirm whether there is any derivation permission to drm agent 16 from AV player 15 to the operation of " copy " button among the D among Figure 29 to downloading content.In this case, only kept pseudo-permission and maintenance derivation permission, thereby drm agent 16 is permitted from the derivation that 26 requests of DRM server have the license ID of describing the Play Control meta file 41.Yet the use point of Play Control meta file 41 confirms that mark is opened (describing with reference to Figure 32 subsequently), need obtain producing the approval of charge from the user thus before this request.In case obtain this approval from the user, drm agent 16 is derived permission to 26 requests of DRM server.
Corresponding to this request, in case confirm the client-side information of client terminal management server 22,26 supplies of DRM server are derived and are permitted drm agent 16.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded and will use content, and charge/account settlement server 23 is carried out charge thus.
In receiving equipment 10; Drm agent 16 extracts content key Kc and is fed to AV player 15 then from derive permission; The encryption of content is deciphered by AV player 15 then; Thus obtained coded data is supplied to outside output unit 17, suitably changes coding method with enciphered data once more, outputs to output destination (DVD register etc.) then.
Figure 31 shows the description example corresponding to the downloading control meta file 31 of the operator scheme of pattern d.Should be characterised in that the ID that in the license ID project, has described pseudo-permission corresponding to the downloading control meta file 31 of pattern d operator scheme.
Figure 32 shows the description example corresponding to the Play Control meta file 41 of pattern d play mode.This Play Control meta file 41 corresponding to the operator scheme of pattern d is characterised in that has described the DVD derivation in the license type project; And in the license ID project, described the ID as the derivation permission of true permission, they are different with the license ID of in the license ID project of downloading control meta file 31, describing (license ID of pseudo-permission).In addition, a bit be to use an affirmation mark to be opened in addition.
Pattern e operator scheme is such service; Its lease that provides play period like 8 day 7 night to be used for content is watched/is listened to; And also realize to play the prolongation of period; Wherein content download phase carry out can playing the charge that the period is worth, and when playing the period when being extended, this amount is charged.
Figure 33 shows and presents to user's screen corresponding to the operator scheme of pattern e and change.Earlier; Show the download navigation screen through browser 11, the user selects to want downloaded contents A on the download navigation screen then, thus; Shown in the A among the figure; Shown by corresponding to the summary of the small-sized image of content, content and as " lease is watched/listened to ", " 8 days 7 nights ", the information of " 300 yen of prices " and the affirmation screen that " buy and download " button is formed, and in case, download startup confirming that on-screen options makes " buy and download " button.Screen display changes the screen display that shows ongoing download shown in the B among the figure into.
After the download of accomplishing content A, in case the user carries out scheduled operation, ECG 14 shows such as the so local contents list of C among the figure.In case chosen content A from local contents list; Demonstration shown in the D among the figure by the summary description of content A, the image of minification, about the information of the broadcast of " buying May 31 " permission, " watching/listen to " button and the content details screen formed about the information of the extra broadcast permission of " prolong lease-100 yen of every days " and " prolongation is watched/listened to " button.
Yet,, have only and can operate " watching/listen to " button, and can not operate " prolongation is watched/listened to " button playing (in this case up to May 31) in the period.On the contrary, after can playing the period end, can not operate " watching/listen to " button, and only with operation " prolongation is watched/listened to " button.Note, can carry out such layout, wherein can play information and " prolongation is watched/listened to " button that does not show in the period about extra broadcast, and after can playing the period end, show these.
In addition, at supply equipment 20 ends, can play (being up to May 31 in this case) in the period, amount supplied is not play permission outward.
In case at content detail information screen operation " watching/listen to " button, AV player 15 starts the broadcast of content A shown in the E among the figure.After can playing the period end; In case operation " prolongation is watched/listened to " button in content details screen; Screen is converted to affirmation screen among the F in the drawings to obtain the permission to charge from the user; And only operation in this case obtains extra broadcast permission during " confirming " button, and the broadcast of AV player 15 startup content A shown in the G among the figure.
Notice that the description content that the various types of information among the A among the figure, D and the F are based on Play Control meta file 41 shows.
Figure 34 shows the processing sequence corresponding to pattern e operator scheme.In pattern e; In case having carried out the user operates (particularly with buying through the content choice in the download navigation page or leaf of browser 11 demonstrations; Operation to " buy and the download " button among the A of Figure 33) finishes; Notify client terminal management server 22 with purchaser record, obtain downloading control meta file 31, download content according to downloading control meta file 31 then through downloader 12.Response contents is downloaded and is accomplished, and asks for permission to DRM server 26 from drm agent 16 then, plays permission then and is fed to drm agent 16 from DRM server 26.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded content, carries out through charge/account settlement server 23 in this stage thus and charges.In addition, subsequently, the information of having accomplished is downloaded in reflection in the download navigation page or leaf.
Subsequently; In case carry out (particularly can playing the period to the play operation of downloading content; Operation to " watching/listen to " button among the D among Figure 33), starts AV player 15, and confirm whether to exist any broadcast permission to drm agent 16 from AV player 15 through ECG 14.In this case, kept playing permission, from play permission, extract content key Kc thus and be fed to AV player 15 then, and content has been play (deciphering of encryption and the deciphering of coding) by AV player 15.
Notice that playing under the situation that permission is not maintained at drm agent 16 for some reason (for example playing permission obtain under the situation of having failed owing to reason such as communication disruption), drm agent 16 should permission to 26 requests of DRM server.In the case, the use point of Play Control meta file 41 confirms that mark is closed (describing with reference to Figure 36 subsequently), does not carry out the processing that obtains user's approval, and obtains permission.
In addition, can play the period end along with time lapse, can not carry out play operation (particularly), and alternatively can carry out operation " prolongation is watched/listened to " button to the operation of " watching/listen to " button among the D of Figure 33 to this content.In case carry out " prolongation is watched/listened to " button, start AV player 15 through ECG 14, and confirm whether to exist any extra broadcast permission to drm agent 16 from AV player 15.In this case, only keep to play over and done with broadcast permission of period and do not keep extra broadcast permission, so the extra broadcast permission of the license ID that drm agent is used for to server 26 requests describing at Play Control meta file 41.Yet, confirm that corresponding to the use point that the extra broadcast of Play Control meta file 41 is permitted mark is opened (describing with reference to Figure 36 subsequently), must before this request, obtain approval thus to the charge of generation from the user.In case obtain this approval from the user, 16 of drm agents are play permission outside DRM server 26 amount of the claim.
Corresponding to this request, in case confirm the client-side information of client terminal management server 22, the outer broadcast of DRM server 26 amount supplieds permitted drm agent 16.In this stage the charge of extra broadcast permission is carried out by charge/account settlement server 23.
Under the situation of receiving equipment 10, drm agent 16 extracts content key Kc and is fed to AV player 15 then from extra broadcast permission, and carries out the broadcast (deciphering of encryption and the deciphering of coding) of content through AV player 15.
Figure 35 shows the description example corresponding to the downloading control meta file 31 of the operator scheme of pattern e.Should be characterised in that the ID that in the license ID project, has described as the broadcast permission of true permission corresponding to the downloading control meta file 31 of pattern e operator scheme.
Figure 36 shows the description example corresponding to the Play Control meta file 41 of pattern e play mode.This Play Control meta file 41 corresponding to the operator scheme of pattern e is characterised in that; For a kind of permission in two types the permission; In the license type project, described ordinary playing, and in the license ID project, described the ID of this broadcast permission, wherein this broadcast permission is true permission; And identical with the license ID of in the license ID project of downloading control meta file 31, describing, and and use point to confirm that mark is closed.In addition; Permit for the another kind in two types the permission; Extra broadcast has been described in the license type project; And in the license ID project, described the ID of the extra broadcast permission of the true permission of this conduct, they are different with the license ID of in the license ID project of downloading control meta file 31, describing, and and use point to confirm that mark is opened.
Pattern f operator scheme is such service, wherein after freely the short time of waiting as 10 minutes is watched/listens in test, allows content to copy DVD to only once, and when copying, carries out charge.
Figure 37 shows and presents to user's screen corresponding to pattern f operator scheme and change.At first, at first, show the download navigation screen through browser 11; The user selects to want downloaded contents A on the download navigation screen then; Thus, shown in the A among the figure, shown by image, the summary of content and the affirmation screen that " download " button is formed corresponding to the minification of content; And in case operation " affirmation " button is downloaded startup.Screen display changes the screen display that shows ongoing download shown in the B among the figure into.
After the download of accomplishing content A, in case the user carries out scheduled operation, the local contents list that ECG 14 shows shown in the C among the figure.In case chosen content A from local contents list, show summary description shown in the D among the figure, minification by content A image, relate to preview and play information " free charge preview 10 minutes " and " watching/listen to " button of permission and relate to and derive the content details screen quilt that the information " DVD copies 1000 yen of each copies " of permitting and " copy " button are formed.Notice that " watching/listen to " button that the instruction preview is watched/listened to can only be operated once.
In case operate in " watching/listen to " button on the content details, shown in the E among the figure, AV player 15 only starts the time (being 10 minutes in this case) of the broadcast permission of content.In addition; In case operation " copy " button; Screen changes into confirms screen obtaining the charge approval from the user shown in the F among the figure, and has only operation " to confirm " under the situation of button, and just the acquisition derivation is permitted; Shown in the G among the figure, AV player 15 and outside lead-out unit 17 start the derivation of content A then.
Notice that the description content that the various types of information among the A among the figure, D and the F are based on Play Control meta file 41 shows.
Figure 38 shows the processing sequence corresponding to pattern f operator scheme.In pattern f; In case carried out in the download navigation page or leaf that the user shows through browser 11 content choice and down operation (particularly; Operation to " download " button among the A of Figure 37); Notify client terminal management server 22 with service recorder, obtain downloading control meta file 31, download content according to downloading control meta file 31 then through downloader 12.Response contents is downloaded and is accomplished, and asks for permission to DRM server 26 from drm agent 16 then, and pseudo-then permission is fed to drm agent 16 from DRM server 26.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded content, thereby subsequently, the information of downloading is accomplished in reflection in the download navigation page or leaf.
Subsequently; In case carry out (particularly can playing in the period to the preview operation of downloading content; Operation to " watching/listen to " button among the D among Figure 37), starts AV player 15, confirm whether to exist any preview to play permission to drm agent 16 from AV player 15 through ECG 14.In this case, only kept pseudo-permission and do not keep preview to play permission, so drm agent 16 is play permission to the preview that 26 requests of DRM server have the license ID of describing in the Play Control meta file 41.In the case, be closed (describing with reference to Figure 40 subsequently), do not carry out the processing that obtains user's approval, and secure permission because the use point of Play Control meta file 41 is confirmed mark.
Drm agent 16 extracts content key Kc and is fed to AV player 15 then from preview broadcast permission, and content is play (deciphering of encryption and the deciphering of coding) by AV player 15.Notice that this preview is play permission and can only be used once.
In addition, arrange DRM server 26 so that can twice or repeatedly supply preview and play permission.
In case carry out downloading the derivation operation (particularly, to the operation of " copy " button among the D among Figure 37) of content, ECG 14 starts AV player 15, confirms whether to exist any derivation permission from AV player 15 to drm agent 16.In this case, only kept pseudo-permission and maintenance derivation permission, so drm agent 16 is permitted to the derivation that 26 requests of DRM server have the license ID of describing in the Play Control meta file 41.Yet the use point of Play Control meta file 41 confirms that mark is opened (describing with reference to Figure 40 subsequently), need obtain producing the approval of charge from the user thus before this request.In case obtain this approval from the user, drm agent 16 is derived permission to 26 requests of DRM server.
Corresponding to this request, in case confirm the client-side information of client terminal management server 22,26 supplies of DRM server are derived and are permitted drm agent 16.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded and will use content, and charge/account settlement server 23 is carried out charge thus.
Under the situation of receiving equipment 10; Drm agent 16 extracts content key Kc and is fed to AV player 15 then from derive permission; The encryption of content is deciphered by AV player 15 then; Thus obtained coded data is supplied to outside output unit 17, suitably changes coding method and encryption again, outputs to output destination (DVD register etc.) then.
Figure 39 shows the description example corresponding to the downloading control meta file 31 of the operator scheme of pattern f.Should be characterised in that the ID that in the license ID project, has described pseudo-permission corresponding to the downloading control meta file 31 of pattern f operator scheme.
Figure 40 shows the description example corresponding to the Play Control meta file 41 of pattern f play mode.This Play Control meta file 41 corresponding to the operator scheme of pattern f is characterised in that has described two types permission.For a kind of permission in two types the permission; Characteristic is in the license type project, to have described the preview broadcast; And the ID that plays permission as the preview of true permission has been described in the license ID project; They are different with the license ID of in the license ID project of downloading control meta file 31, describing, and use point to confirm that mark is closed.In addition; On the other hand permit for the another kind in two types the permission; The DVD derivation has been described in the license type project; And in the license ID project, described the ID as the derivation permission of true permission, they are different with the license ID of in the license ID project of downloading control meta file 31, describing, and and use point to confirm that mark is opened.
Pattern g operator scheme is such service, its make the progressively downloading and playing can carry out content (start play and need not to wait for downloads finish) with download the ordinary playing (lease is watched/listened to) afterwards that finishes, each is to charge when in use.Note, for downloading and playing progressively with download that to accomplish ordinary playing charge amount afterwards can be different, and and progressively downloading and playing have slight communication disruption and maybe can only play equivalent risk one time, so that charge amount is set to is more cheap than ordinary playing.
Figure 41 shows and presents to user's screen corresponding to pattern g operator scheme and change.At first; Show the download navigation screen through browser 11, the user selects to want downloaded contents A on the download navigation screen then, thus; Shown in the A among the figure; Shown by image, the summary of content and the affirmation screen that " download " button is formed, and in case, downloaded startup confirming that on-screen options makes " downloads " button corresponding to the minification of content.Screen display changes the screen display that shows ongoing download shown in the B among the figure into.
During the download of content A, in case the user carries out scheduled operation, the local contents list that ECG 14 shows shown in the C among the figure.In case chosen content A from local contents list shows the image of the summary description by content A shown in the D among the figure, minification, the content details screen quilt of forming about the information of downloading and playing progressively " download watch/listen to before accomplishing 120 minutes 200 yen " and " watching/listen to " button, about the information of ordinary playing " lease watch/listen to 8 days 7 night 300 yen " and " watching/listen to " button in addition.Note; Progressively downloading and playing whether can carry out by ECG 14 based on whether exist corresponding permission, content A size of data, data quantity transmitted, data signaling rate wait to confirm; And and can carry out the progressively following time of state of downloading and playing when being in, instructing progressively, " watching/listen to " button of downloading and playing becomes exercisable.At this moment, " watching/listen to " button of instruction ordinary playing can not be operated.In case content A downloads completion, instruct then progressively that " watching/listen to " button of downloading and playing becomes and can not operate, and " watching/listen to " button of instruction ordinary playing becomes and can operate.
Notice that at supply equipment 20 ends, only permission is progressively play in supply during content is downloaded, and does not play permission and do not supply.On the contrary, after accomplishing the content download, do not supply and progressively download permission, permit and supply to play.
In case during the download of content A; Instruct progressively " watching/listen to " button of downloading and playing on the content of operation details screen; The affirmation screen that screen changes into shown in the E among the figure is ratified to obtain from user's charge; In a single day and when operating in " confirming " button of confirming on the screen, shown in the F among the figure, start the broadcast of content A.
In addition; In case after the download of content A has been accomplished; " watching/listen to " button of instruction ordinary playing on the content of operation details screen; Screen changes affirmation screen shown in the G among the figure into obtaining from user's charge approval, and in case when operating in " confirming " button of confirming on the screen, the broadcast of startup content A shown in the H among the figure.
Notice that the description content that the various types of information among the 41A among the figure, D, E and the G are based on Play Control meta file 41 shows.
Figure 42 shows the processing sequence corresponding to pattern g operator scheme.In pattern g; In case carried out in the download navigation page or leaf that the user shows by browser 11 content choice and down operation (particularly; Operation to " download " button among the A of Figure 41); Notify client terminal management server 22 with service recorder, obtain downloading control meta file 31, download content according to downloading control meta file 31 then through downloader 12.In case during content is downloaded, carried out progressively downloading and playing operation (particularly; Instruct the progressively operation of " watching/listen to " button of downloading and playing among the D to Figure 41); Start AV player 15 through ECG 14, and confirm whether to exist progressively download permission to drm agent 16 from AV player 15.In this case, do not keep any permission, thus the progressively downloading and playing permission that drm agent 16 has the license ID of describing in the Play Control meta file 41 to 26 requests of DRM server.In the case, confirm that corresponding to the use point of progressively downloading permission of Play Control meta file 41 mark is opened (describing with reference to Figure 44 subsequently), must obtain producing the approval of charge from the user thus before this request.In case obtain this approval from the user, then drm agent 16 is progressively downloaded permission from 26 requests of DRM server.
Corresponding to this request, in case confirm the client-side information of client terminal management server 22,26 supplies of DRM server are progressively downloaded and are permitted drm agent 16.In this stage, client terminal management server 22 can be recognized the use (progressively downloading and playing) of 10 pairs of these contents of receiving equipment, carries out charge through charge/account settlement server 23 thus.
Under the situation of receiving equipment 10, extraction content key Kc is fed to AV player 15 to drm agent 16 then the permission from progressively downloading, and content is play (deciphering of encryption and the deciphering of coding) by AV player 15.
Response has been accomplished content and has been downloaded, and ask for permission to DRM server 26 from drm agent 16, and pseudo-permission is fed to drm agent 16 from DRM server 26.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded content, and thus, after this information of downloading is accomplished in reflection in the download navigation page or leaf.
Subsequently; In case carry out (particularly to the play operation of downloading content; Operation to " watching/listen to " button of instruction ordinary playing among the D among Figure 41), starts AV player 15, and confirm whether to exist any broadcast permission to drm agent 16 from AV player 15 through ECG 14.In this case, only kept pseudo-permission and progressively downloaded permission and maintenance broadcast permission, so drm agent 16 is permitted from the broadcast that 26 requests of DRM server have the license ID of describing the Play Control meta file 41.Yet the use point of Play Control meta file 41 confirms that mark is opened (describing with reference to Figure 44 subsequently), must obtain producing the approval of charge from the user thus before this request.In case obtain this approval from the user, then drm agent 16 is play permission from 26 requests of DRM server.
Corresponding to this request, in case confirm the client-side information of client terminal management server 22,26 supplies of DRM server are play and are permitted drm agent 16.In this stage, client terminal management server 22 can recognize that receiving equipment 10 downloaded and will use content, carries out through charge/account settlement server 23 thus and charges.
Under the situation of receiving equipment 10, drm agent 16 extracts content key Kc and is fed to AV player 15 then from play permission, and content is play (deciphering of encryption and the deciphering of coding) by AV player 15.
Figure 43 shows the description example corresponding to the downloading control meta file 31 of the operator scheme of pattern g.Should be characterised in that the ID that in the license ID project, has described pseudo-permission corresponding to the downloading control meta file 31 of pattern g operator scheme.
Figure 44 shows the description example corresponding to the Play Control meta file 41 of pattern g play mode.Should be characterised in that corresponding to the Play Control meta file 41 of pattern g operator scheme and describe two types permission.Any is for a kind of permission in two types the permission; It has described progressively downloading and playing in the license type project; And the ID that progressively downloads permission as true permission has been described in the license ID project; They are different with the license ID of in the license ID project of downloading control meta file 31, describing, and use point to confirm that mark is opened.In addition; On the other hand permit for the another kind in two types the permission; It has described ordinary playing in the license type project; And in the license ID project, described the ID as the broadcast permission of true permission, they are different with the license ID of in the license ID project of downloading control meta file 31, describing, and and use point to confirm that mark is opened.
So far finish the description to each operator scheme of g to pattern a.
As stated, according to having used content download system 1 of the present invention, it is conventional that the basic operation of receiving equipment 10 keeps, and can handle the various operator schemes to g like above-mentioned pattern a.
The present invention can be applied to various content download services, video content still not, and be music, text, computer program or the like.
Now, above-mentioned a series of processing can use hardware to carry out, or use software executing.Under the situation of using a series of processing of software executing; The program that constitutes software is installed to the computer that is built-in with specialized hardware from program recorded medium; Or be installed on general personal computer etc., for example, wherein various types of functions can be carried out through various types of programs are installed.
Figure 45 shows and is used for the calcspar of ios dhcp sample configuration IOS DHCP of hardware that service routine is carried out the computer of above-mentioned a series of processing.
Under the situation of computer 100, CPU (CPU) 101, ROM (read-only memory) 102, RAM (random access memory) 103 interconnect via bus 104.
Input/output interface 105 further is connected to bus 104.Input/output interface 105 is connected to the input unit of being made up of keyboard, mouse, microphone etc. 106; The output unit of forming by display, loud speaker etc. 107; The memory cell of forming by hard disk and nonvolatile storage etc. 108; By communication unit 109 and driver 110 that network interface etc. is formed, this driver 110 is used to drive the removable media 111 like disk, CD and magneto optical disk or semiconductor memory.
Under the situation of like this computer 100 of configuration, for example CPU 101 the program in the memory cell 108 of will being stored in is loaded into bus 104 via input/output interface 105 and carries out among the RAM103, carries out above-mentioned a series of processing thus.
Noticing that the program that computer 100 is carried out can be such program, wherein handle with order in this manual and carry out with the time series mode, maybe can be such program, wherein handle can carry out concurrently or where necessary preface call or the like.
In addition, program can use a computer to carry out, and maybe can disperse and use many computers to carry out.In addition, program can be transferred to remote computer and execution.
In addition, in this manual, term " system " expression is by the integral body of a plurality of equipment component devices.
Note embodiments of the invention and be not limited to the foregoing description; But can under the prerequisite that does not deviate from essence of the present invention, carry out various types of modifications.

Claims (18)

1. content download system comprises:
Content supply equipment is used for supplying content; And
Content receiving apparatus is used for via network from said Content supply equipment received content;
Said content receiving apparatus comprises
Input device is used to import user's operation;
Download apparatus, be used for corresponding to said user operation from said Content supply device downloads encrypted content be used to play the required Play Control data of said content;
Deriving means is used for when playing said downloaded contents, comprises the existence of the permission of the key that is used to decipher said encrypted content based on said Play Control data validation, and obtains corresponding to the said permission of confirming the result; And
Playing device is used to use the permission of said acquisition to play said encrypted content; And
Said Content supply equipment comprises
The control data feeding mechanism is used to respond from the request of said content receiving apparatus and supplies to be used to play and downloaded the required said Play Control data of content;
The Content supply device is used to respond from the request of said content receiving apparatus and supplies said encrypted content; And
The permission feeding mechanism is used to respond from said content receiving apparatus and supplies the said permission that comprises the key that is used to decipher said encrypted content based on the request of said Play Control data;
Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises the approval in-formation whether unique license identification information, license type information, indication will get the Green Light from the user of content receiving apparatus and shows and the exhibition information of permitting relevant user when obtaining permission.
2. content download method that is used for content download system; Said content download system comprises the Content supply equipment that is used for supplying content and is used for via the content receiving apparatus of network from said Content supply equipment received content that said method comprises the following steps:
Use said content receiving apparatus,
Input user operation,
Corresponding to said user's operation, from said Content supply device request encrypted content and the required Play Control data of the said content of broadcast;
And use said Content supply equipment,
Response is from the request of said content receiving apparatus and supply said encrypted content and said Play Control data;
And use said content receiving apparatus,
When playing said downloaded contents, comprise the existence of the permission of the key that is used to decipher said encrypted content based on said Play Control data validation, and corresponding to confirming the result to the said permission of said Content supply device request;
And use said Content supply equipment
Response is supplied the said said Content supply equipment of permitting from the request of said content receiving apparatus based on said Play Control data;
And use said content receiving apparatus,
Use the permission of said acquisition to play said encrypted content; And
Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises the approval in-formation whether unique license identification information, license type information, indication will get the Green Light from the user of content receiving apparatus and shows and the exhibition information of permitting relevant user when obtaining permission.
3. a Content supply equipment is configured to via network Content supply arrived content receiving apparatus, and said Content supply equipment comprises:
The control data feeding mechanism, be used to supply broadcast by the required Play Control data of said content receiving apparatus downloaded contents to said content receiving apparatus;
The Content supply device is used to respond from the request of said content receiving apparatus and supplies said encrypted content; And
The permission feeding mechanism is used to respond from said content receiving apparatus and supplies the said permission that comprises the key that is used to decipher said encrypted content based on the request of said Play Control data;
Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises the approval in-formation whether unique license identification information, license type information, indication will get the Green Light from the user of content receiving apparatus and shows and the exhibition information of permitting relevant user when obtaining permission.
4. Content supply equipment as claimed in claim 3, at least a below wherein in said license type information, describing: ordinary playing, it indicates this permission to have the restriction of the play period that is applied to said content; Extra broadcast, its this permission of indication has the play period of prolongation after the play period corresponding to said ordinary playing has finished; Preview is play, and its this permission of indication is used to try/audition; Downloading and playing progressively, its this permission of indication makes content when downloading, to play; And derive, it indicates this permission to allow said content to export and record external equipment from said content receiving apparatus.
5. Content supply equipment as claimed in claim 4; Wherein said permission feeding mechanism is after the play period corresponding to the permission of said ordinary playing has finished, and response is supplied said extra broadcast permission from said content receiving apparatus based on the request of said Play Control data.
6. Content supply equipment as claimed in claim 4, wherein said permission feeding mechanism response is only supplied said preview for same content and is play permission once from the request of said content receiving apparatus based on said Play Control data.
7. Content supply equipment as claimed in claim 4, wherein said permission feeding mechanism responds from the request of said content receiving apparatus based on said Play Control data, and only during content is downloaded, supplies the permission that is used for said progressively downloading and playing.
8. Content supply method that is used for Content supply equipment, said Content supply equipment disposition be with Content supply to the content receiving apparatus that connects via network, said Content supply method comprises the following steps:
The said content receiving apparatus of the supply broadcast required Play Control data of downloaded contents arrives said content receiving apparatus;
Response is from the request of said content receiving apparatus and supply encrypted content; And
Response from said content receiving apparatus based on the request of said Play Control data and supply the permission that comprises the key that is used for the enabling decryption of encrypted content;
Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises the approval in-formation whether unique license identification information, license type information, indication will get the Green Light from the user of content receiving apparatus and shows and the exhibition information of permitting relevant user when obtaining permission.
9. a content receiving apparatus is configured to from the Content supply equipment received content via the network connection, and said content receiving apparatus comprises:
Input device is configured to import user's operation;
Download apparatus is configured to corresponding to said user's operation from said Content supply device downloads encrypted content and the required Play Control data of the said content of broadcast;
Deriving means is configured to when playing said downloaded contents, comprises the existence of the permission of the key that is used to decipher said encrypted content based on said Play Control data validation, and obtains corresponding to the said permission of confirming the result; And
Playing device is used to use the permission of said acquisition to play said encrypted content,
Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises the approval in-formation whether unique license identification information, license type information, indication will get the Green Light from the user of content receiving apparatus and shows and the exhibition information of permitting relevant user when obtaining permission.
10. content receiving apparatus as claimed in claim 9 also comprises:
Output device is configured to after carrying out that encryption method change to be handled or at least one in the encryption handled again, and the said content of wherein encrypting by said playing device deciphering is outputed to external equipment.
11. content receiving apparatus as claimed in claim 10, at least a below wherein in said license type information, describing:
Ordinary playing, its this permission of indication has the restriction of the play period that is applied to said content;
Extra broadcast, its this permission of indication has the play period of prolongation after the play period corresponding to said ordinary playing has finished;
Preview is play, and its this permission of indication is used to try/audition;
Downloading and playing progressively, its this permission of indication makes content when downloading, to play; And
Derive, it indicates this permission to allow said content to export and record external equipment from said content receiving apparatus.
12. content receiving apparatus as claimed in claim 11, wherein after the play period corresponding to said ordinary playing permission had finished, said input device was accepted the operation that the user of said extra broadcast permission is obtained in approval.
13. content receiving apparatus as claimed in claim 11, wherein after the play period corresponding to said ordinary playing permission had finished, said input device was accepted the operation that the user of said extra broadcast permission is obtained in instruction.
14. content receiving apparatus as claimed in claim 11; Wherein respond from the request of said playing device based on said Play Control data, said input device is only accepted once command for same content and is obtained the operation that the user of permission is play in said preview.
15. content receiving apparatus as claimed in claim 11; Wherein respond from the request of said playing device based on said Play Control data, said input device is only accepted the operation that instruction obtains the user of said progressively downloading and playing permission during content is downloaded.
16. content receiving apparatus as claimed in claim 9 also comprises the affirmation device, is used to follow said approval in-formation, confirms to obtain said permission by user's approval.
17. content receiving apparatus as claimed in claim 16, wherein
Under the situation of obtaining user's approval through said affirmation device,
Said deriving means obtains said permission; And
Under the situation of not obtaining user's approval through said affirmation device,
Said playing device notice user content can not be play.
18. the content reception method of a content receiving apparatus, said content receiving apparatus are configured to from the Content supply equipment received content via the network connection, said method comprises the following steps:
Input user operation;
Corresponding to said user operation, from said Content supply device downloads encrypted content and be used to play the required Play Control data of said content;
When playing said download content, comprise the existence of the permission of the key that is used to decipher said encrypted content based on said Play Control data validation, and obtain corresponding to the said permission of confirming the result; And
Use said permission of obtaining to play said encrypted content;
Wherein in said Play Control data, described at least one group or more License Infos, said License Info comprises the approval in-formation whether unique license identification information, license type information, indication will get the Green Light from the user of content receiving apparatus and shows and the exhibition information of permitting relevant user when obtaining permission.
CN2008800180026A 2007-05-30 2008-05-30 Content download system, content download method, content supplying apparatus, content supplying method, content receiving apparatus, content receiving method Expired - Fee Related CN101682740B (en)

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